[R] Average & sample size

Pablo Andres pablo at hpcf.upr.edu
Fri Nov 17 00:22:09 CET 2006

Hi there!
I need a piece of advice obtaining the average of 4 samples from 
different sample sizes.
lets's see that my numbers are:

6,3,6 and 15
and each one comes from:
100,130,125 and 33 sample sizes.

I need a command in R to solve this!
I guess it should not be complicated but... it happens to me! jejeje
Thanks a Lot


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